期刊
JOURNAL OF CATALYSIS
卷 375, 期 -, 页码 224-233出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2019.04.038
关键词
5-Hydroxymethylfurfural; HMF conversion; Beta zeolite; Supported Pd catalyst; Hydrogenation; Furan ring-opening
资金
- Engineering and Physical Sciences Research Council (EPSRC), UK [EP/K014749]
- EPSRC [EP/S019367/1, EP/R008280/1, EP/K014749/1] Funding Source: UKRI
Conversion of 5-hydroxymethylfurfural (HMF) in water to the linear diketone derivatives 1-hydroxyhexane-2,5-dione (HHD) and 2,5-hexanedione (HXD) was investigated over a series of Beta zeolite-supported transition metal catalysts (Co, Ni, Cu, Ru, Pd). Their catalytic performance was tested in a batch stirred reactor (T = 110 degrees C, P-H2 = 20 bar) with Pd showing the highest activity and selectivity to HHD and HXD. The effects of Pd particle size, zeolite Si/Al ratio and reaction conditions (T = 80-155 degrees C, P-H2 = 5-60 bar) were also investigated. The incorporation of Pd into Beta zeolite by the deposition-coprecipitation method produced the most efficient catalyst, affording complete HMF conversion (T = 110 degrees C, P-H2 = 60 bar) predominantly to HHD (68% selectivity) and HXD (8% selectivity). The combination of a bifunctional acid/redox solid catalyst and water enhances the hydrolytic ring-opening and subsequent hydrogenation of the furan ring. Catalytic activity can be partially restored by a simple regeneration treatment. This work establishes a catalytic route to produce valuable diketone derivatives from renewable furanic platform sources in water. (C) 2019 Elsevier Inc. All rights reserved.
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